ElastiCache Redis Multi-AZ - Disabled

ID: cache-redis-multiaz-disabled

Severity: medium

Author: DhiyaneshDK

Tags: cloud,devops,aws,amazon,elasticache,aws-cloud-config

Description

Ensure that your Amazon ElastiCache Redis cache clusters are using a Multi-AZ deployment configuration to enhance reliability through automatic failover.

YAML Source

id: cache-redis-multiaz-disabled

info:
  name: ElastiCache Redis Multi-AZ - Disabled
  author: DhiyaneshDK
  severity: medium
  description: |
    Ensure that your Amazon ElastiCache Redis cache clusters are using a Multi-AZ deployment configuration to enhance reliability through automatic failover.
  impact: |
    Disabling ElastiCache Redis Multi-AZ can lead to data loss and increased downtime in the event of a primary node failure, as failover to a secondary node in a different availability zone will not occur automatically.
  remediation: |
    Enable Multi-AZ replication in the ElastiCache Redis settings or create a new cluster with Multi-AZ enabled to ensure high availability.
  reference:
    - https://www.trendmicro.com/cloudoneconformity-staging/knowledge-base/aws/ElastiCache/elasticache-multi-az.html
    - https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/WhatIs.Components.html
  tags: cloud,devops,aws,amazon,elasticache,aws-cloud-config

variables:
  region: "us-west-2"

flow: |
  code(1)
  for(let ReplicationGroupId of iterate(template.replicationgroupids)){
    set("replicationgroup", ReplicationGroupId)
    code(2)
  }

self-contained: true

code:
  - engine:
      - sh
      - bash
    source: |
      aws elasticache describe-replication-groups --region $region --output json --query 'ReplicationGroups[*].ReplicationGroupId'

    extractors:
      - type: json
        name: replicationgroupids
        internal: true
        json:
          - '.[]'

  - engine:
      - sh
      - bash

    source: |
        aws elasticache describe-replication-groups --region $region --replication-group-id $replicationgroup --query 'ReplicationGroups[*].MultiAZ'

    matchers:
      - type: word
        words:
          - 'disabled'

    extractors:
      - type: dsl
        dsl:
          - 'replicationgroup + " ElastiCache Redis Multi-AZ is Disabled"'
# digest: 490a004630440220427ed84b4f9fec905f6280bd6ce8366c3d91d8edd28a9ac79d32974a916da726022005c02d872966a4591fd1424386aaaa0f985e92a88dc9908525b86187d8769488:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "cloud/aws/elasticache/cache-redis-multiaz-disabled.yaml"

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